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Finding the Fourth Proportional to 287,596.80, 396,900.93 and 158,535.11

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Solution

The fourth proportional to 287,596.80, 396,900.93 and 158,535.11 is: 218,788.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,596.80 : 396,900.93 = 158,535.11 : x
  2. Step 2: Convert to fraction form
    287,596.80/396,900.93 = 158,535.11/x
  3. Step 3: Cross multiply
    287,596.80x = 396,900.93 × 158,535.11
  4. Step 4: Simplify right side
    287,596.80x = 62,922,730,612.15
  5. Step 5: Solve for x
    x = 62,922,730,612.15/287,596.80
  6. Step 6: Final answer
    x = 218,788.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.